Help edit DDS files?

[AstroCat]

Ok here's the problem:

1. convert .dds file into .png file to edit in photoshop
2. open another .png file and copy part of it I like and paste in to the first converted file.
3. merge layers and save as new .png file
4. convert new .png file to .dds file
5. In game the image only shows an outline of where the image should be or it will show part of the image with the other part "whited" out.

If I just convert to png and then right back to dds everything is ok.
Something is happening when I edit the .png file and merge the layers.

Any help? Thanks!

 

[drachasor]

Go here:

http://developer.nvidia.com/object/nv_texture_tools.html

Nvidia has a free plug-in for Photoshop for editing DDS files. Open the files with no mip-maps. Save the files with the alpha channel in DTX3 format and have it generate mip-maps.

That's what I do anyhow.

-Drachasor

 

[AstroCat]

Thanks... after a bunch of experimentation I figured out my problem. It had to do with the alpha channels. Thanks for the help